Ore-crusher



I (No Model.) 2 Sheets-Sheet 1.

- T. A. BLAKE.

ORE GRUSHER.

No. 439,374. I Patented Oct. 28. 1890.

HLIIIH UNITED STATES PATENT OFFICE.

THEODORE A. BLAKE, OF NEW HAVEN, CONNECTICUT.

ORE-CRUSHER.

SPECIFICATION formingpart of Letters Patent No. 439,374, dated October 28, 1890.

' Application filed September 9, 1889. Serial No. 323,332. (No model.)

' To all whom, it may concern.-

Be it known that I, THEODORE A. BLAKE, of New Haven, in the county of New Haven and State of Connecticut, have invented a new Improvement in Ore-Crushers; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact'description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a side view of the crusher complete; Fig. 2, a top view of the same, the cover removed; Fig. 3, afront end view of the same; Fig. 4, a longitudinal section of the machine cutting transversely through the jaws; Fig. 5, aface view of one of the jaws detached; Fig. 6, a transverse section on line a: '00 of Fig. 2;

' Fig. 7, a side view of the machine, thetie-rods removed, showing the jaws and abutments in the wide-open position; Fig. 8, the invention as applied to a single working-jaw crusher.

This invention relates to an improvement in that class of crushers for ores and other purposes of the type known as the Blake crusher, but in which several moving jaws are arranged adjacent to'each other, so as to form several crushing-spaces in the same machine, commonlyknown as the multiple-jaw crusher. The invention is, however, applicable to single-j aw crushers.

As hitherto constructed, the swinging or movable jaws have been arranged within a frame composed of stationary ends, one end forming a cheek for the next jaw, succeeding jaws operating against each other, the other end forming a stationary abutment for the toggle-joint, which operates directly upon the jaw most distant from the stationary jaw, and so as to impart swinging movement to it, which movement will be imparted to the succeeding jaws through the material placed between the jaws. The stationary abutment at one end and stationary jaw at the opposite end necessitates a frame of great strength. The jaws are short, and the sides of the frame come necessarily close up to the ends of the jaws, making such a contracted space within which the jaws operate that an examination or repair of the jaws is diflicult to be done without removing the entire machine from its place of location.

The object of my present invention is to improve the machine in this respect as well as in other details of construction, as more fully hereinafter described.

A represents the bed of the machine; B, the abutment forming one jaw, and against which the other jaws are opposed; C, the first doublefaced jaw; D, the second double-faced jaw; E, the next jaw, through which the power is applied,the illustration showing three pairs of jaw-faces, though there may be more or less.

F represents the abutment against which one toggle G bears, while the other toggle H bears against the jaw E, the toggle being operated from an eccentric on the driving-shaft I in the usual manner, and so that the up and down movement of the pitman L, operated by the eccentric, imparts swinging movement to the toggle sufficientto give to the jaw E the swinging movement required for all the aws.

The jaws C, D, and E are hung upon pivots a in the base below, and so as to swing freely. The abutment B is also hung upon a pivot b, substantially like the jaws C, D, and E, and all so as to swing toward and from each other. The working-faces 0,f the jaws converge from their upper edge downward, and so as to leave an open space between the jaws at the bottom for the escape of material.

The other abutment F is hung upon pivots cl in the base like the jaws, and so that it may swing upon its pivot. The axes upon which all the parts thus swing are parallel with each other and parallel with the workingfaces of the jaws. The abutment B and the abutment F are each constructed with suitable laterally-projecting ears K at their upper ends, and the abutments are connected by tie-rods Lone on each sideextending through the said ears, one end of the rods provided with a head e and the other with a screw-nut f, so that the said abutments may be adjustably held together, the strength of the rods making connection between the two abutments sufficient to resist the force required to be applied to the jaws for the crushing operation.

Between the respective jaws springs M, preferably india-rubber, are arranged, the tendency of which is to force the jaws away from each other, but so as to readily yield under the crushing-force applied, the springs being employed toret-urn the jaws after such crushing force has been applied.

Seats N are made in the respective jaws to receive and support the respective springs.

)n each side of the base in rear of the swinging jaws an upright P is formed, extending above the jaws, and to which uprights a cover R is hinged so as to turn down over and cover the jaws, as represented in Fig. 1, removable cheeks S being set upon the base at each side of the jaws and so as to completely inclose the jaws.

The cover is constructed with a deliverymouth T, opening through it, and through which the material to be crushed may be thrown onto the top of the jaws, the cover held in its closed position by thumb-screws U, but so that the cover may be turned upward from over the jaws, as seen in Fig. 7. This completes the construction. By hinging the abutments as well as the aws the removal of the tie-rods permits the aws and the abutments all to swing to an open position, as represented in Fig. 7, and so that the cover being open anda cheek removed, all the jaws and abutments in fact, all the operative parts of the machineare exposed. The working-jaw faces may be removed, repaired, or replaced without removing the jaws bodily from the machine, and as examination of the jaws or such repairs are frequent the saving of time by this construction is very great.

The advantage of the swinging abutment and extreme jaw, whereby the machine may be opened for inspection, repairs, &c., applies to crushers employing a single jaw-such as the well -known Blake crusher, and as seen in Fig. 8. In this case the abutment B,

which forms the resisting-jaw, and the abutment F for the toggles are arranged substantially the same as in the first illustration, and are secured together in like manner by tierods, and on the removal of the rods the abutments maybe turned away so as to expose the interior mechanism of the machine for convenient examination or repairs.

I claim 1. In an ore-crusher having an abutmeutB hung upon an axis in the frame and so as to swing in a vertical plane, the said abutment supporting the resisting-jaw, a toggle-abut ment F, also hung upon an axis in the frame I and so as to swing in the same vertical plane as the other abutment, the said two abutments rigidly connected by tie-rods L L, combined with the operating-jaw arranged between the said two abutments, anda toggle mechanism arranged'between the said abutment F and the said operating-jaw, substantially as described.

2. In a multiple-jaw crusher, the combination of an abutment carrying the stationary resisting-jaw and hung upon pivots at one end of the frame, a toggle-abutment hung at the other end of the frame, said toggle-abutment and j aw-abutment detachably connected by tie-rods, two or more movable jaws arranged in the frame between said abutmentjaw and the toggle-jaw, combined with toggle mechanism arranged between the said toggleabutment and the movable jaw next forward of said toggle-abutment, substantially as described.

THEODORE A. BLAKE.

Witnesses:

JOHN E. EARLE, FRED O. EARLE. 

